Joseph A Pecar. The McGraw-Hill telecommunications factbook. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoJoseph A Pecar. The McGraw-Hill Telecommunications Factbook. New York: McGraw-Hill.
MLA引文Joseph A Pecar. The McGraw-Hill Telecommunications Factbook. New York: McGraw-Hill.
警告:這些引文格式不一定是100%准確.